Quote:
Originally Posted by GRANTLDN
So E90 springs go on E84 b6 shocks?
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It's all E90 X drive suspension wise, with the only significant difference being the diameter of the front strut needed to fit a larger opening in the knuckle. Springs are the same general shape, from what I saw comparing vs. my E series 135.
Just to knit pick, springs don't go "on" the shocks(rear dampeners). They do sit over/go on the front struts (front dampeners) though.
But anyway, unless you have a pair of E90 sedan springs handy and like to experiment with fitment/ride height/etc. I'd stick with either a known quantity X1 specific aftermarket spring, or a height-adjustable coil over.
Problem with the coilovers is that they seem to just use an E90 coilover with a sleeve over the front strut for the larger knuckle opening. This generally means the you're limited how high you can make the rear (like it potentially sits too low for some people's tastes even on its highest setting).
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs)
'14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat)
'08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat)